From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 55028C43331 for ; Sun, 10 Nov 2019 03:09:56 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 24FA321848 for ; Sun, 10 Nov 2019 03:09:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573355396; bh=Sg8qrQudyXGXbUZiWMaBT0NuDvDe+WK1N9/ihXre3Q4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=l+eVGbhuTZ16ELidVPT4ZRmN7L8gbLETEZS8p0MflCxaYcZTp/SeAlwP77Td0hg5+ Sl21hnodyNup2LrnVP/wfCvi81g53Ytbzk0HyI1Ay9mW48TCZjjF3Xhzw+8fa6EWMO KjnauXZx6umrk5npu5FKIA0eOU4Rp7l7DiRizA88= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727519AbfKJDJp (ORCPT ); Sat, 9 Nov 2019 22:09:45 -0500 Received: from mail.kernel.org ([198.145.29.99]:43742 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728543AbfKJCo0 (ORCPT ); Sat, 9 Nov 2019 21:44:26 -0500 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9B78921655; Sun, 10 Nov 2019 02:44:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1573353866; bh=Sg8qrQudyXGXbUZiWMaBT0NuDvDe+WK1N9/ihXre3Q4=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=0kwALOfWONzGrUrbGac1CiV62VxHO1ob3YKkADF2sqtxlUP5y45ya3M3rsSXEg1SF ljia4BaUBV6VRiDOQb3dmM1SZCLxpeuHFx3vWewmrSHF25SEL7kaSSeCRFOExTn0tw EfAlC+wvz4kntbyrWZab8kK2sDK7tFgHiT16Z1LE= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Jaegeuk Kim , Chao Yu , Sasha Levin , linux-f2fs-devel@lists.sourceforge.net Subject: [PATCH AUTOSEL 4.19 146/191] f2fs: update i_size after DIO completion Date: Sat, 9 Nov 2019 21:39:28 -0500 Message-Id: <20191110024013.29782-146-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20191110024013.29782-1-sashal@kernel.org> References: <20191110024013.29782-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Sender: stable-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: stable@vger.kernel.org From: Jaegeuk Kim [ Upstream commit 0a4daae5ffea39f5015334e4d18a6a80b447cae4 ] This is related to ee70daaba82d ("xfs: update i_size after unwritten conversion in dio completion") If we update i_size during dio_write, dio_read can read out stale data, which breaks xfstests/465. Reviewed-by: Chao Yu Signed-off-by: Jaegeuk Kim Signed-off-by: Sasha Levin --- fs/f2fs/data.c | 15 +++++++-------- fs/f2fs/f2fs.h | 1 + 2 files changed, 8 insertions(+), 8 deletions(-) diff --git a/fs/f2fs/data.c b/fs/f2fs/data.c index 9511466bc7857..c0d0744a52a55 100644 --- a/fs/f2fs/data.c +++ b/fs/f2fs/data.c @@ -887,7 +887,6 @@ static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) struct f2fs_summary sum; struct node_info ni; block_t old_blkaddr; - pgoff_t fofs; blkcnt_t count = 1; int err; @@ -916,12 +915,10 @@ static int __allocate_data_block(struct dnode_of_data *dn, int seg_type) old_blkaddr, old_blkaddr); f2fs_set_data_blkaddr(dn); - /* update i_size */ - fofs = f2fs_start_bidx_of_node(ofs_of_node(dn->node_page), dn->inode) + - dn->ofs_in_node; - if (i_size_read(dn->inode) < ((loff_t)(fofs + 1) << PAGE_SHIFT)) - f2fs_i_size_write(dn->inode, - ((loff_t)(fofs + 1) << PAGE_SHIFT)); + /* + * i_size will be updated by direct_IO. Otherwise, we'll get stale + * data from unwritten block via dio_read. + */ return 0; } @@ -1087,6 +1084,8 @@ int f2fs_map_blocks(struct inode *inode, struct f2fs_map_blocks *map, last_ofs_in_node = dn.ofs_in_node; } } else { + WARN_ON(flag != F2FS_GET_BLOCK_PRE_DIO && + flag != F2FS_GET_BLOCK_DIO); err = __allocate_data_block(&dn, map->m_seg_type); if (!err) @@ -1266,7 +1265,7 @@ static int get_data_block_dio(struct inode *inode, sector_t iblock, struct buffer_head *bh_result, int create) { return __get_data_block(inode, iblock, bh_result, create, - F2FS_GET_BLOCK_DEFAULT, NULL, + F2FS_GET_BLOCK_DIO, NULL, f2fs_rw_hint_to_seg_type( inode->i_write_hint)); } diff --git a/fs/f2fs/f2fs.h b/fs/f2fs/f2fs.h index fb216488d67a9..6beda9147d3a0 100644 --- a/fs/f2fs/f2fs.h +++ b/fs/f2fs/f2fs.h @@ -600,6 +600,7 @@ enum { F2FS_GET_BLOCK_DEFAULT, F2FS_GET_BLOCK_FIEMAP, F2FS_GET_BLOCK_BMAP, + F2FS_GET_BLOCK_DIO, F2FS_GET_BLOCK_PRE_DIO, F2FS_GET_BLOCK_PRE_AIO, F2FS_GET_BLOCK_PRECACHE, -- 2.20.1